Which of the following provides access for developers to charge Amazon’s customers for their purchases?

The correct answer is D. all of the mentioned.

• Fulfilment by Amazon (FBA) is a service that allows businesses to store their products in Amazon’s warehouses, and then have Amazon pick, pack, and ship orders to customers. FBA also provides customer service and returns processing.
• Fulfillment by Merchant (FBM) is a service that allows businesses to store their products in their own warehouses, and then ship orders to customers themselves. FBM businesses are responsible for customer service and returns processing.
• Payments on Amazon (FPS) is a service that allows businesses to accept payments from Amazon’s customers. FPS supports credit cards, debit cards, and Amazon Pay.

All of these services provide access for developers to charge Amazon’s customers for their purchases.